KVPY 2019 SB SX Exam Previous Papers

Question : 45 of 120

Marks: +1, -0

Alkali metals (M) dissolved in liquid NH

_3

to give

Solution:

Alkalimetal give deep blue solution on dissolving in liquid ammonia.

M + (x + y)NH_3 \ { ––––––▸} \ {[M(NH_3)_x]^{⊕}}↙{\ammoniated \metal\cation}+{[e(NH_3)_y]^{⊖}}↙{\ammoniated\electron}

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